KHIA headerKnow-How in Action

VOL XXII, NO 25

Main Cooling Water Pumps Protected With Belzona

 
 

Industry:

Power (POWR)

 
 

Application:

Centrifugal Pumps (CEP)

 
 

Customer Location:

Coal fired power station - UK

 
 

Application Date:

2004

 
 

Application Situation:

Allen Gwynnes cooling pumps. These pumps are capable of delivering 120,000 gallons of cooling water per minute.

 
 

Problem:

Erosion corrosion particularly on main wearing rings, cut water and delivery tubes.

 
 

Products:

Belzona® 1111 (Super Metal)

Belzona® 1341 (Supermetalglide)

 

Substrate:

Cast iron

 
 

Application Method:

Carried out in accordance with Belzona system leaflets CEP-1 and CEP-3. Particular attention was paid to surface preparation with repeated steam cleaning and grit blasting used to remove salt contamination.

 
 

Belzona Facts:

A competitive ceramic coating had previously been used. Although lower in cost it did not provide the efficiency enhancement that Belzona® 1341 does with its subsequent pay-back. Application still OK in 2007.

 
 

Photographs Description

  1. Scale of pumps can be gauged from the delivery tubes
  2. Suction side coated
  3. Degree of corrosion evident on the delivery tubes
  4. Completed coating
 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com